SnorkelForecast.com

Ishigaki Snorkel Report Today

Japan · Updated Mon 02:30 (JST) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Wed 09:47

Ishigaki has a usable snorkeling window around Thu 10:00. The main thing to watch is waves.

Score: 4.9/10

Best time: Thu 10:00

Main risk: Waves

Best morning signal: Wed 10:00 (Fair).

Best afternoon signal: Wed 17:00 (Fair). Peak afternoon wind is about 3.5 m/s.

Email me when it is good

Sunrise

06:10

Sunset

19:29

Water

30.3°C

Max air

30.7°C

Sky

Cloudy

97% cloud

Good window is available today

Next safe window: Thu 01:00 (4% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

✅ good conditions

Main blocker: Waves

Best available hours

Next safe window starts at Thu 01:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (25 hours)
  • Tide/current (25 hours)
  • Sea temperature (13 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 34/100

Low peak drift risk around Wed 11:00.

warm water supports seasonal jellyfish activity; surface drift/current is noticeable; local shoreline exposure is not mapped yet.

Sightings override the model: if you see small purple jellyfish with long trailing tentacles, treat them as sting-capable and give them space.

Upcoming high tides

Next early morning high tide: Wed 22:00

Wed 10:00, Wed 22:00

Nearby alternatives in Japan

Miyako

127 km away

✅ Good

Kerama Islands

381 km away

✅ Good

Okinawa - Blue Cave

438 km away

✅ Good

Advanced forecast data

Viewing historical data

Thu 00:00 – Sun 00:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.36 around Thu 10:00; 1 of 24 hours are good, fair, or excellent.

Score trend, higher is better. Excellent ≥ 0.72, good 0.55–0.72, fair 0.35–0.55.

Conditions (24h trends)

Tap a chart to load just that series.

0/24 sampled hours stay at or below 0.36m (range 2.58m to 3.74m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 6.77 to 11.39m/s).

Tides range from 0.73m to 1.83m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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Scoring methodology (for technical users)

We score each hour from 0 to 1 using daylight and these weighted components:

  • Wave height (35%): best below 0.36m, then decreases as it rises.
  • Wind speed (25%): best below 5.4m/s, lower is better.
  • Sea surface temperature (15%): best within 20.6°C to 30.4°C.
  • Tide and currents (15%): best around slack/high-tide windows.
  • Daylight (10%): visibility and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Thu 00:00 2.60 · high 6.77 · high 29.80 · good poor
Thu 01:00 2.66 · high 7.05 · high 29.90 · good fair
Thu 02:00 2.74 · high 7.54 · high 29.90 · good poor
Thu 03:00 2.80 · high 7.10 · high 30.00 · good poor
Thu 04:00 2.86 · high 7.68 · high 30.00 · good poor
Thu 05:00 2.92 · high 8.13 · high 30.10 · good poor
Thu 06:00 2.98 · high 8.64 · high 30.10 · good poor
Thu 07:00 3.04 · high 8.38 · high 30.10 · good poor
Thu 08:00 3.10 · high 8.07 · high 30.00 · good poor
Thu 09:00 2.58 · high 8.59 · high 30.30 · good poor
Thu 10:00 2.64 · high 8.59 · high 30.30 · good poor
Thu 11:00 2.70 · high 8.24 · high 30.20 · good poor
Thu 12:00 2.76 · high 8.08 · high 30.20 · good poor
Thu 13:00 2.82 · high 8.59 · high 30.10 · good poor
Thu 14:00 2.86 · high 7.89 · high 30.10 · good poor
Thu 15:00 2.92 · high 8.63 · high 30.00 · good poor
Thu 16:00 3.02 · high 8.63 · high 30.00 · good poor
Thu 17:00 3.12 · high 9.14 · high 29.90 · good poor
Thu 18:00 3.22 · high 9.78 · high 29.90 · good poor
Thu 19:00 3.30 · high 10.53 · high 29.80 · good poor
Thu 20:00 3.40 · high 10.85 · high 29.80 · good poor
Thu 21:00 3.48 · high 11.10 · high 29.70 · good poor
Thu 22:00 3.62 · high 11.05 · high 29.70 · good poor
Thu 23:00 3.74 · high 11.39 · high 29.60 · good poor
Fri 00:00 3.88 · high 12.66 · high 29.60 · good poor
Fri 01:00 4.02 · high 12.58 · high 29.50 · good poor
Fri 02:00 4.14 · high 14.22 · high 29.50 · good poor
Fri 03:00 4.28 · high 14.84 · high 29.50 · good poor
Fri 04:00 4.42 · high 13.81 · high 29.50 · good poor
Fri 05:00 4.54 · high 16.39 · high 29.40 · good poor
Fri 06:00 4.68 · high 15.38 · high 29.40 · good poor
Fri 07:00 4.80 · high 17.45 · high 29.40 · good poor
Fri 08:00 4.94 · high 18.80 · high 29.40 · good poor
Fri 09:00 5.06 · high 19.24 · high 29.40 · good poor
Fri 10:00 5.26 · high 19.17 · high 29.40 · good poor
Fri 11:00 5.48 · high 20.55 · high 29.40 · good poor
Fri 12:00 5.68 · high 23.00 · high 29.30 · good poor
Fri 13:00 6.22 · high 21.90 · high 29.30 · good poor
Fri 14:00 6.74 · high 25.67 · high 29.20 · good poor
Fri 15:00 7.28 · high 23.48 · high 29.20 · good poor
Fri 16:00 7.26 · high 16.39 · high 29.10 · good poor
Fri 17:00 7.26 · high 11.75 · high 29.10 · good poor
Fri 18:00 7.24 · high 8.60 · high 29.00 · good poor
Fri 19:00 7.04 · high 6.04 · high 28.90 · good poor
Fri 20:00 6.84 · high 7.02 · high 28.70 · good poor
Fri 21:00 6.64 · high 8.66 · high 28.60 · good poor
Fri 22:00 6.38 · high 16.81 · high 28.50 · good poor
Fri 23:00 6.10 · high 23.56 · high 28.30 · good poor
Sat 00:00 5.84 · high 24.75 · high 28.20 · good poor
Sat 01:00 5.74 · high 18.66 · high 28.10 · good poor
Sat 02:00 5.66 · high 22.58 · high 28.10 · good poor
Sat 03:00 5.56 · high 21.89 · high 28.00 · good poor
Sat 04:00 5.44 · high 20.76 · high 28.00 · good poor
Sat 05:00 5.30 · high 23.06 · high 27.90 · good poor
Sat 06:00 5.18 · high 22.13 · high 27.90 · good poor
Sat 07:00 4.90 · high 20.56 · high 27.80 · good poor
Sat 08:00 4.62 · high 18.76 · high 27.80 · good poor
Sat 09:00 4.34 · high 19.69 · high 27.80 · good poor
Sat 10:00 4.10 · high 17.72 · high 27.80 · good poor
Sat 11:00 3.84 · high 16.72 · high 27.80 · good poor
Sat 12:00 3.60 · high 16.15 · high 27.80 · good poor
Sat 13:00 3.44 · high 15.37 · high 27.80 · good poor
Sat 14:00 3.28 · high 14.79 · high 27.70 · good poor
Sat 15:00 3.12 · high 13.84 · high 27.70 · good poor
Sat 16:00 3.02 · high 12.73 · high 27.70 · good poor
Sat 17:00 2.94 · high 12.29 · high 27.60 · good poor
Sat 18:00 2.84 · high 11.22 · high 27.60 · good poor
Sat 19:00 2.74 · high 10.50 · high 27.60 · good poor
Sat 20:00 2.66 · high 9.73 · high 27.60 · good poor
Sat 21:00 2.56 · high 9.31 · high 27.60 · good poor
Sat 22:00 2.48 · high 9.48 · high 27.60 · good poor
Sat 23:00 2.42 · high 9.32 · high 27.70 · good poor